Plastic packaging film production equipment

Abstract

The invention discloses plastic packaging film production equipment which comprises a fixing frame, a foam stabilizer, a propeller strut, an extrusion roller and a base, a feeding die is fixedly connected to the top of the base, an extrusion die is arranged at the top of the feeding die, a material guide channel is formed in the feeding die, the cross section of the material guide channel is in an L shape, and the foam stabilizer is arranged on the propeller strut. A feeding pipe is fixedly connected to one end of the material guiding channel, a circular ring groove is formed in the end, away from the feeding pipe, of the material guiding channel, the cross section of the circular ring groove is semicircular, and a first circular ring die and a second circular ring die are fixedly connected to the outer wall of the top of the extrusion die. According to the film blowing device, negative pressure suction force can be generated in the shell, when the negative pressure suction force is generated in the shell, the backflow rate of high-temperature airflow in the backflow pipe can be increased, the cooling effect of the film blowing pipe on a film body is guaranteed, meanwhile, high-temperature airflow dead corners are prevented from being generated at the top of the backflow pipe, high-temperature air is sucked away in time, and the film blowing effect is improved. And the cooling effect of the film bubbles is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of plastic packaging film production, in particular to a plastic packaging film production device. Background Art

[0002] In recent years, as people's environmental awareness has gradually increased, polyolefin heat shrinkable film has been favored by more and higher-end markets, gradually replacing PVC heat shrinkable film, and the market capacity has increased dramatically, becoming the mainstream flexible packaging material.

[0003] At present, in the process of producing polyolefin heat shrinkable film, blow molding is one of the important processing steps. After searching, the Chinese invention patent with the announcement number CN117382156B discloses a plastic film blowing device and method, which belongs to the field of film processing, including support rods, the number of which is four groups and distributed in a rectangular shape, the lower side of the support rods is fixedly connected to a bracket 1, and a film blowing assembly is arranged between the four groups of support rods. The film blowing assembly includes a fixed seat fixedly connected to the bracket 1, the outer surface of the lower end of the fixed seat is fixedly connected to a feeding mechanism, the right side of the outer surface of the feeding mechanism is fixedly connected to a feeding mechanism, and the inner side of the feeding mechanism is provided with an air supply assembly.

[0004] Based on the prior art, the above patents still have the following deficiencies: in the process of blowing and cooling the film through the air inlet assembly and the return assembly, since the specifications of the air inlet cover are much larger than the return air duct, the high-temperature airflow circulating in the film will be blocked, causing the high temperature to form an air vortex at the top of the air inlet cover to form a dead angle. As the airflow forms a dead angle locally inside the film bubble and continues to heat up, the air with the highest temperature cannot be sucked away in time, which will affect the cooling effect of the film bubble. Therefore, a plastic packaging film production equipment is urgently needed to solve the above problems. Summary of the invention

[0005] In view of the problems in the related art, the present invention proposes a plastic packaging film production device to overcome the above technical problems existing in the existing related art.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A plastic packaging film production device, comprising a fixing frame, a bubble stabilizer, a herringbone frame, an extrusion roller and a base, wherein a feeding die is fixedly connected to the top of the base, an extrusion die is arranged on the top of the feeding die, a material guide channel is provided inside the feeding die, the cross section of the material guide channel is L-shaped, one end of the material guide channel is fixedly connected to a feeding pipe, an annular groove is provided at one end of the material guide channel away from the feeding pipe, the cross section of the annular groove is semicircular, a first annular die and a second annular die are fixedly connected to the top outer wall of the extrusion die respectively, a gap between the first annular die and the second annular die forms a film outlet channel, the film outlet channel extends to the inside of the extrusion die, and a feeding assembly is arranged inside the extrusion die;

[0008] An air inlet pipe and an exhaust pipe are fixedly connected to the circumferential outer wall of the feeding die, respectively. The air inlet pipe is connected to a blower through a pipeline. An air inlet channel and an exhaust channel are provided inside the feeding die and the extrusion die. The air inlet channel is connected to the air inlet pipe, and the exhaust channel is connected to the exhaust pipe. A blowing groove is provided inside the extrusion die, and the air inlet channel is connected to the blowing groove. A return pipe is fixedly connected to the bottom inner wall of the blowing groove, and the exhaust channel is connected to the return pipe. A film blowing assembly is provided on the top outer wall of the second circular ring die.

[0009] Furthermore, an extrusion channel is provided inside the extrusion die, the extrusion channels are distributed in an equidistant circular pattern inside the feeding die, the cross section of the extrusion channel is spiral-shaped, and the extrusion channel is connected to the feeding assembly.

[0010] Furthermore, the feeding component includes a gathering channel, an ascending channel, an extrusion channel and a feeding channel opened inside the extrusion die, and the gathering channel, the ascending channel, the extrusion channel and the feeding channel are distributed in sequence from the bottom to the top of the extrusion die, and the gathering channel, the ascending channel, the extrusion channel and the feeding channel are all interconnected, and the feeding channel is connected to the film outlet channel.

[0011] Furthermore, the inner diameters of the feeding channel and the ascending channel gradually decrease along the ascending direction, the inner diameter of the extrusion channel first decreases and then increases along the ascending direction, and the inner diameter of the gathering channel remains unchanged along the ascending direction.

[0012] Furthermore, the film blowing assembly includes an annular plate fixedly connected to the bottom inner wall of the blowing groove, the circumferential inner wall of the annular plate, the bottom inner wall of the blowing groove, and the circumferential outer wall of the reflux pipe surround an air outlet cavity, one end of the air inlet channel is located inside the air outlet cavity, the inner diameter of the annular plate gradually decreases in the direction away from the feeding mold, the top outer wall of the second circular ring mold is fixedly connected with a film blowing tube, the circumferential outer wall of the film blowing tube is provided with circular holes distributed at equal distances, and the film blowing tube is located inside the film body.

[0013] Furthermore, the circumferential outer wall of the return pipe is fixedly connected to a bearing seat, the circumferential outer wall of the bearing seat is fixedly connected to a blade seat, the circumferential outer wall of the blade seat is fixedly connected to first blades distributed in a circular shape at equal distances, the first blades are in the shape of turbofan blades, and the first blades are located above the interior of the annular plate.

[0014] Furthermore, a vertical column is fixedly connected to the top outer wall of the blade seat, an end of the vertical column away from the blade seat is fixedly connected to an outer gear ring, and an inner gear ring is meshed with the circumferential inner wall of the outer gear ring.

[0015] Furthermore, the top outer wall of the return pipe is fixedly connected to a shell, the return pipe is communicated with the shell, the middle part of the inner gear ring is fixedly connected to a ring plate, the bottom outer wall of the ring plate is fixedly connected to a rotating rod, the circumferential outer wall of the rotating rod is fixedly connected to a shaft sleeve, the circumferential outer wall of the shaft sleeve is fixedly connected to second blades distributed in a circular shape at equal distances, the second blades are located inside the shell, and the top outer wall of the shell is provided with suction grooves distributed in a circular shape at equal distances, and the cross-section of the suction grooves is S-shaped.

[0016] Furthermore, a support frame is fixedly connected to the circumferential inner wall of the return pipe, an end of the support frame away from the circumferential inner wall of the return pipe is fixedly connected to a rotating seat, and an end of the rotating rod away from the ring plate is fixedly connected to the rotating seat.

[0017] Furthermore, a transmission seat is provided on the circumferential outer wall of the reflux pipe, the circumferential outer wall of the vertical column contacts the circumferential inner wall of the transmission seat, and two sides of the transmission seat are fixedly connected to the reflux pipe and the film blowing pipe respectively.

[0018] Beneficial effects of the present invention:

[0019] The present invention provides a plastic packaging film production device. Through the provided extrusion die, feeding die and extrusion channel, when the staff needs to extrude the film body, they can first connect the feed pipe to the external screw extruder, and extrude the molten plastic into the guide channel through the screw extruder. The plastic entering the guide channel will first be diverted into the extrusion channel. Since the extrusion channel is spiral, the spiral extrusion channel can realize the rapid diversion and preliminary extrusion of the molten plastic, and quickly squeeze the bubbles in the molten plastic to avoid the molten plastic containing a large amount of air, resulting in the poor quality of the produced plastic film. At the same time, the spiral channel can extend the extrusion path of the molten plastic, thereby making the air in the molten plastic be discharged more thoroughly, and the extended extrusion path can make the molten plastic be cooled and formed more quickly.

[0020] The present invention provides a plastic packaging film production device. Through the provided feeding assembly, the plastic extruded from the extrusion channel will enter the gathering channel for re-convergence and mixing. Subsequently, as the plastic is continuously extruded, the pressure inside the gathering channel gradually increases, and the plastic is then extruded into the rising channel. The inner diameter of the rising channel gradually decreases, thereby avoiding the subsequent blockage or slowdown of the feeding speed caused by the sudden change of the inner diameter when the plastic subsequently enters the extrusion channel. This is beneficial to the subsequent secondary extrusion and defoaming of the plastic in the extrusion channel. After the secondary defoaming of the plastic in the extrusion channel, the plastic will be squeezed into the feeding channel, and finally extruded from the film outlet channel through the feeding channel, thereby quickly completing the production process of the film body.

[0021] The present invention provides a plastic packaging film production equipment. Through the provided blowing groove, reflux pipe and film blowing pipe, the high-speed airflow generated by the blower will enter the air outlet cavity inside the blowing groove through the air inlet channel. As the high-speed airflow inside the air outlet cavity rises, the high-speed airflow will collide with the first blade. Since the first blade is in the shape of a turbofan blade, it can convert the power of the airflow rising in the vertical direction into the rotational power in the horizontal direction. When the first blade rotates, it can drive the blade seat to rotate together. Through the rotation of the blade seat, the vertical column and the outer gear ring fixed on the top thereof can be rotated together. When the outer gear ring rotates, it can drive the inner gear ring meshed with it to rotate together. A rotating rod is fixed in the middle of the inner gear ring, which can finally drive the rotating rod and the second blade to rotate, so that negative pressure suction is generated inside the shell. When a strong negative pressure suction is generated inside the shell, it can not only accelerate the reflux rate of the high-temperature airflow inside the reflux pipe, and ensure the cooling effect of the film blowing pipe on the film body, but also avoid the generation of a high-temperature airflow dead angle at the top of the reflux pipe, and suck away the high-temperature air in time, thereby ensuring the cooling effect of the film bubble. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall front structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the overall cross-sectional plan structure of the present invention.

[0025] Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0026] Figure 4 It is a schematic diagram of the cross-sectional structure of the extrusion die and the feeding die of the present invention.

[0027] Figure 5 For the present invention Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0028] Figure 6 For the present invention Figure 4 Schematic diagram of the enlarged structure at point C in the middle.

[0029] Figure 7 It is a schematic diagram of the structure of the film blowing tube distributed on the extrusion die of the present invention.

[0030] Figure 8 It is a schematic diagram of the longitudinal cross-sectional structure of the extrusion die and the feeding die of the present invention.

[0031] Fig. 9 It is a schematic diagram of the cross-sectional top view of the extrusion channel of the present invention.

[0032] Fig.10 It is a schematic diagram of the gas flow direction in the reflux pipe of the film blowing pipe in the present invention.

[0033] In the figure:

[0034] 1. Fixed frame; 2. Bubble stabilizer; 3. Base; 4. Herringbone frame; 5. Extrusion roller; 6. Film body; 7. Extrusion die; 8. Feeding die; 9. Material guide channel; 10. Film outlet channel; 11. Feeding channel; 12. Extrusion channel; 13. Aggregation channel; 14. Rising channel; 15. Air outlet cavity; 16. Ring plate; 17. Blowing groove; 18. Bearing seat; 19. First blade; 20. Reflux pipe; 21. Exhaust channel; 22. Ring Groove; 23, extrusion channel; 24, first circular ring mold; 25, second circular ring mold; 26, film blowing tube; 27, round hole; 28, transmission seat; 29, vertical column; 30, outer gear ring; 31, inner gear ring; 32, suction groove; 33, rotating rod; 34, shell; 35, support frame; 36, rotating seat; 37, shaft sleeve; 38, second blade; 39, blade seat; 40, exhaust pipe; 41, intake pipe; 42, feed pipe; 43, intake channel. DETAILED DESCRIPTION

[0035] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0038] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances. Please refer to Figure 1-Figure 10, a plastic packaging film production equipment, including a fixed frame 1, a bubble stabilizer 2, a herringbone frame 4, an extrusion roller 5 and a base 3, a feeding die 8 is fixedly connected to the top of the base 3, an extrusion die 7 is arranged on the top of the feeding die 8, a material guide channel 9 is provided inside the feeding die 8, the cross section of the material guide channel 9 is L-shaped, one end of the material guide channel 9 is fixedly connected to a feed pipe 42, and an annular groove 22 is provided at the end of the material guide channel 9 away from the feed pipe 42, and the cross section of the annular groove 22 is semicircular, and the top outer wall of the extrusion die 7 is respectively fixedly connected with a first annular die 24 and a second annular die 25, and the gap between the first annular die 24 and the second annular die 25 forms a film outlet channel 10, and the film outlet channel 10 extends to the inside of the extrusion die 7, and a feeding assembly is arranged inside the extrusion die 7;

[0039] The circumferential outer walls of the feeding die 8 are respectively fixedly connected with an air inlet pipe 41 and an exhaust pipe 40, which are connected to the blower through a pipeline, and the feeding die 8 and the extrusion die 7 are both provided with an air inlet channel 43 and an exhaust channel 21, the air inlet channel 43 is connected to the air inlet pipe 41, and the exhaust channel 21 is connected to the exhaust pipe 40, and the extrusion die 7 is provided with a blowing groove 17, the air inlet channel 43 is connected to the blowing groove 17, and a return pipe 20 is fixedly connected to the bottom inner wall of the blowing groove 17, and the exhaust channel 21 is connected to the return pipe 20, and the top outer wall of the second circular ring die 25 is provided with a film blowing assembly, which can quickly complete the film blowing production of the film body 6, and at the same time, in the process of film blowing production, effectively avoid the influence of bubbles on the film body 6 product, and the entire production equipment has a good blowing and cooling effect on the film bubbles, thereby ensuring the quality of the produced film body 6.

[0040] Preferably, an extrusion channel 23 is provided inside the extrusion die 7, and the extrusion channel 23 is distributed in an equidistant circle inside the feeding die 8. The cross-section of the extrusion channel 23 is spiral, and the extrusion channel 23 is connected to the feeding assembly. Since the extrusion channel 23 is spiral, the spiral extrusion channel 23 can realize rapid diversion and preliminary extrusion of the molten plastic, and quickly burst the bubbles in the molten plastic to avoid the molten plastic containing a large amount of air, resulting in poor quality of the produced plastic film. At the same time, the spiral channel can extend the extrusion path of the molten plastic, thereby allowing the air in the molten plastic to be discharged more thoroughly, and the extended extrusion path can enable the molten plastic to be cooled and formed more quickly.

[0041] Preferably, the feeding assembly includes a gathering channel 13, a rising channel 14, an extrusion channel 12 and a feeding channel 11 which are opened inside the extrusion die 7, the gathering channel 13, the rising channel 14, the extrusion channel 12 and the feeding channel 11 are distributed in sequence from the bottom to the top of the extrusion die 7, the gathering channel 13, the rising channel 14, the extrusion channel 12 and the feeding channel 11 are all interconnected, the feeding channel 11 is connected to the film outlet channel 10, the inner diameters of the feeding channel 11 and the rising channel 14 gradually decrease along the ascending direction, the inner diameter of the extrusion channel 12 first decreases and then increases along the ascending direction, and the inner diameter of the gathering channel 13 remains unchanged along the ascending direction, the film blowing assembly includes an annular plate 16 fixedly connected to the bottom inner wall of the blowing groove 17, the circumferential inner wall of the annular plate 16, the bottom inner wall of the blowing groove 17, and the circumferential outer wall of the reflux pipe 20 surround an air outlet cavity 15, and one end of the air inlet channel 43 is located inside the air outlet cavity 15 The inner diameter of the annular plate 16 gradually decreases in the direction away from the feeding die 8, and a film blowing tube 26 is fixedly connected to the top outer wall of the second circular ring die 25. The circumferential outer wall of the film blowing tube 26 is provided with circular holes 27 distributed at equal distances. The film blowing tube 26 is located inside the film body 6. The plastic extruded from the extrusion channel 23 will enter the gathering channel 13 for re-convergence and mixing. Then, as the plastic is continuously extruded, the pressure inside the gathering channel 13 gradually increases, and the plastic is squeezed into the rising channel 14, and the inner diameter of the rising channel 14 gradually decreases, avoiding the subsequent entry of the plastic into the extrusion channel 12. Blockage or slowdown of the feeding speed caused by the sudden change of the inner diameter is avoided, which is beneficial to the subsequent secondary extrusion and defoaming of the plastic by the extrusion channel 12. After the secondary defoaming of the plastic in the extrusion channel 12, the plastic will be squeezed into the feeding channel 11, and finally extruded from the film outlet channel 10 through the feeding channel 11.

[0042] Preferably, the circumferential outer wall of the return pipe 20 is fixedly connected to the bearing seat 18, the circumferential outer wall of the bearing seat 18 is fixedly connected to the blade seat 39, the circumferential outer wall of the blade seat 39 is fixedly connected to the first blades 19 distributed in a circular shape at equal distances, the first blades 19 are in the shape of turbofan blades, the first blades 19 are located above the inner part of the annular plate 16, the top outer wall of the blade seat 39 is fixedly connected to the vertical column 29, the end of the vertical column 29 away from the blade seat 39 is fixedly connected to the outer gear ring 30, the circumferential inner wall of the outer gear ring 30 is meshed with the inner gear ring 31, the top outer wall of the return pipe 20 is fixedly connected to the shell 34, the return pipe The inner gear ring 20 is connected to the housing 34, the middle part of the inner gear ring 31 is fixedly connected to a ring plate, the bottom outer wall of the ring plate is fixedly connected to a rotating rod 33, the circumferential outer wall of the rotating rod 33 is fixedly connected to a shaft sleeve 37, the circumferential outer wall of the shaft sleeve 37 is fixedly connected to second blades 38 distributed in a circular shape at equal distances, the second blades 38 are located inside the housing 34, the top outer wall of the housing 34 is provided with suction grooves 32 distributed in a circular shape at equal distances, the cross section of the suction groove 32 is S-shaped, the circumferential inner wall of the return pipe 20 is fixedly connected to a support frame 35, and one end of the support frame 35 away from the circumferential inner wall of the return pipe 20 is fixedly connected to The rotating seat 36, the end of the rotating rod 33 away from the ring plate is fixedly connected to the rotating seat 36, the high-speed airflow generated by the blower will enter the air outlet cavity 15 inside the blow molding groove 17 through the air inlet channel 43, and as the high-speed airflow inside the air outlet cavity 15 rises, the high-speed airflow will collide with the first blade 19. Since the first blade 19 is in the shape of a turbofan blade, it can convert the vertical rising power of the airflow into horizontal rotational power. When the first blade 19 rotates, it can drive the blade seat 39 to rotate together. Through the rotation of the blade seat 39, the vertical column 29 and the outer gear ring 30 fixed on the top thereof can be made They rotate together. When the outer tooth ring 30 rotates, it can drive the inner tooth ring 31 meshing with it to rotate together, and a rotating rod 33 is fixed to the middle part of the inner tooth ring 31, which can eventually drive the rotating rod 33 and the second blade 38 to rotate, thereby generating negative pressure suction inside the shell 34. When a strong negative pressure suction is generated inside the shell 34, it can not only accelerate the reflux rate of the high-temperature airflow inside the reflux pipe 20, ensuring the cooling effect of the film blowing tube 26 on the film body 6, but also avoid the generation of high-temperature airflow dead corners at the top of the reflux pipe 20, and suck away the high-temperature air in time, ensuring the cooling effect of the film bubble.

[0043] Preferably, a transmission seat 28 is provided on the circumferential outer wall of the reflux pipe 20, and the circumferential outer wall of the vertical column 29 contacts the circumferential inner wall of the transmission seat 28. The two sides of the transmission seat 28 are respectively fixedly connected to the reflux pipe 20 and the film blowing tube 26. The transmission seat 28 can provide good auxiliary support for the vertical column 29, ensuring that the vertical column 29 can stably perform circular motion.

[0044] In summary, with the help of the above technical solution of the present invention, when the staff needs to extrude the film body 6, they can first connect the feed pipe 42 to the external screw extruder, and extrude the molten plastic into the guide channel 9 through the screw extruder. The plastic entering the guide channel will first be diverted into the extrusion channel 23. Since the extrusion channel 23 is spiral, the spiral extrusion channel 23 can realize the rapid diversion and preliminary extrusion of the molten plastic, and quickly squeeze the bubbles in the molten plastic to avoid the molten plastic containing a large amount of air, resulting in the poor quality of the produced plastic film. At the same time, the spiral The channel can extend the extrusion path of the molten plastic, thereby allowing the air in the molten plastic to be discharged more thoroughly, and the extended extrusion path can allow the molten plastic to be cooled and formed more quickly. The plastic extruded from the extrusion channel 23 will enter the gathering channel 13 for re-convergence and mixing. Then, as the plastic continues to be squeezed in, the pressure inside the gathering channel 13 gradually increases, and the plastic is squeezed into the rising channel 14, and the inner diameter of the rising channel 14 gradually decreases, avoiding the subsequent entry of the plastic into the extrusion channel 12. Blockage or slowdown of the feeding speed due to the sudden change in the inner diameter is avoided, which is beneficial to the subsequent extrusion channel 12 for secondary mixing of the plastic After the plastic is extruded and debubbled through the extrusion channel 12 for secondary debubbling, it will be squeezed into the feeding channel 11, and finally squeezed out from the film outlet channel 10 through the feeding channel 11. At the same time, the high-speed airflow generated by the blower will enter the air outlet cavity 15 inside the blow molding groove 17 through the air inlet channel 43. As the high-speed airflow inside the air outlet cavity 15 rises, the high-speed airflow will collide with the first blade 19. Since the first blade 19 is in the shape of a turbofan blade, it can convert the vertical upward power of the airflow into horizontal rotational power. When the first blade 19 rotates, it can drive the blade seat 39 to rotate together. The rotation of the blade seat 39 can make the solid The vertical column 29 fixed on the top thereof rotates together with the outer toothed ring 30. When the outer toothed ring 30 rotates, it can drive the inner toothed ring 31 meshing with it to rotate together. A rotating rod 33 is fixed to the middle part of the inner toothed ring 31, which can eventually drive the rotating rod 33 and the second blade 38 to rotate, thereby generating negative pressure suction inside the shell 34. When a strong negative pressure suction is generated inside the shell 34, it can not only accelerate the reflux rate of the high-temperature airflow inside the reflux pipe 20 and ensure the cooling effect of the film blowing tube 26 on the film body 6, but also avoid the generation of a high-temperature airflow dead corner at the top of the reflux pipe 20, and suck away the high-temperature air in time, thereby ensuring the cooling effect of the film bubble.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A plastic packaging film production device, comprising a fixing frame (1), a bubble stabilizer (2), an A-frame (4), a squeezing roller (5) and a base (3), characterized in that: A feeding die (8) is fixedly connected to the top of the base (3), an extrusion die (7) is arranged on the top of the feeding die (8), a material guide channel (9) is provided inside the feeding die (8), the cross section of the material guide channel (9) is L-shaped, one end of the material guide channel (9) is fixedly connected to a feeding pipe (42), an end of the material guide channel (9) away from the feeding pipe (42) is provided with a circular groove (22), the cross section of the circular groove (22) is semicircular, the top outer wall of the extrusion die (7) is respectively fixedly connected to a first circular die (24) and a second circular die (25), the gap between the first circular die (24) and the second circular die (25) forms a film outlet channel (10), the film outlet channel (10) extends to the inside of the extrusion die (7), and a feeding assembly is arranged inside the extrusion die (7); An air inlet pipe (41) and an exhaust pipe (40) are fixedly connected to the circumferential outer wall of the feeding die (8), and the air inlet pipe (41) is connected to a blower through a pipeline. An air inlet channel (43) and an exhaust channel (21) are provided inside the feeding die (8) and the extrusion die (7), and the air inlet channel (43) is connected to the air inlet pipe (41), and the exhaust channel (21) is connected to the exhaust pipe (40). A blow molding groove (17) is provided inside the extrusion die (7), and the air inlet channel (43) is connected to the blow molding groove (17). A return pipe (20) is fixedly connected to the bottom inner wall of the blow molding groove (17), and the exhaust channel (21) is connected to the return pipe (20). A film blowing assembly is provided on the top outer wall of the second circular ring die (25).

2. A plastic packaging film production equipment according to claim 1, characterized in that: An extrusion channel (23) is provided inside the extrusion die (7). The extrusion channels (23) are distributed in an equidistant circular pattern inside the feeding die (8). The cross section of the extrusion channel (23) is spiral-shaped. The extrusion channel (23) is connected to the feeding assembly.

3. The plastic packaging film production equipment according to claim 2, characterized in that: The feeding component comprises a gathering channel (13), an ascending channel (14), an extrusion channel (12) and a feeding channel (11) which are opened inside the extrusion die (7); the gathering channel (13), the ascending channel (14), the extrusion channel (12) and the feeding channel (11) are distributed in sequence from the bottom to the top of the extrusion die (7); the gathering channel (13), the ascending channel (14), the extrusion channel (12) and the feeding channel (11) are all interconnected; and the feeding channel (11) is connected to the film outlet channel (10).

4. The plastic packaging film production equipment according to claim 3, characterized in that: The inner diameters of the feeding channel (11) and the ascending channel (14) gradually decrease in the ascending direction, the inner diameter of the extrusion channel (12) first decreases and then increases in the ascending direction, and the inner diameter of the gathering channel (13) remains unchanged in the ascending direction.

5. The plastic packaging film production equipment according to claim 4, characterized in that: The film blowing assembly comprises an annular plate (16) fixedly connected to the bottom inner wall of the blowing groove (17); the circumferential inner wall of the annular plate (16), the bottom inner wall of the blowing groove (17) and the circumferential outer wall of the reflux pipe (20) surround an air outlet cavity (15); one end of the air inlet channel (43) is located inside the air outlet cavity (15); the inner diameter of the annular plate (16) gradually decreases in the direction away from the feeding die (8); the top outer wall of the second circular ring die (25) is fixedly connected to a film blowing tube (26); the circumferential outer wall of the film blowing tube (26) is provided with circular holes (27) distributed at equal distances; the film blowing tube (26) is located inside the film body (6).

6. The plastic packaging film production equipment according to claim 5, characterized in that: The circumferential outer wall of the return pipe (20) is fixedly connected to a bearing seat (18), the circumferential outer wall of the bearing seat (18) is fixedly connected to a blade seat (39), the circumferential outer wall of the blade seat (39) is fixedly connected to first blades (19) distributed in a circular shape at equal distances, the first blades (19) are in the shape of turbofan blades, and the first blades (19) are located above the inner part of the annular plate (16).

7. The plastic packaging film production equipment according to claim 6, characterized in that: The top outer wall of the blade seat (39) is fixedly connected to a vertical column (29), one end of the vertical column (29) away from the blade seat (39) is fixedly connected to an outer toothed ring (30), and the circumferential inner wall of the outer toothed ring (30) is meshed with an inner toothed ring (31).

8. The plastic packaging film production equipment according to claim 7, characterized in that: The top outer wall of the return pipe (20) is fixedly connected to a shell (34), the return pipe (20) is communicated with the shell (34), the middle part of the inner gear ring (31) is fixedly connected to a ring plate, the bottom outer wall of the ring plate is fixedly connected to a rotating rod (33), the circumferential outer wall of the rotating rod (33) is fixedly connected to a shaft sleeve (37), the circumferential outer wall of the shaft sleeve (37) is fixedly connected to second blades (38) distributed in a circular shape at equal distances, the second blades (38) are located inside the shell (34), and the top outer wall of the shell (34) is provided with suction grooves (32) distributed in a circular shape at equal distances, and the cross section of the suction grooves (32) is S-shaped.

9. The plastic packaging film production equipment according to claim 8, characterized in that: A support frame (35) is fixedly connected to the circumferential inner wall of the return pipe (20), an end of the support frame (35) away from the circumferential inner wall of the return pipe (20) is fixedly connected to a rotating seat (36), and an end of the rotating rod (33) away from the ring plate is fixedly connected to the rotating seat (36).

10. The plastic packaging film production equipment according to claim 9, characterized in that: A transmission seat (28) is provided on the circumferential outer wall of the return pipe (20), the circumferential outer wall of the vertical column (29) is in contact with the circumferential inner wall of the transmission seat (28), and the two sides of the transmission seat (28) are respectively fixedly connected to the return pipe (20) and the film blowing pipe (26).

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